sensors Mode-S transponder

4247D1

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to VP-CIX · BOEING 737 MAX 8

Hex
4247D1
Octal
20443721
Decimal
4,343,761
Country
GB
Tail
VP-CIX
Type
B38M
Broadcasting now · callsign CAY441 · 37,000 ft
Flights observed
76
Distinct callsigns
16
Country
GB
Last broadcast
3h ago

Current position

4247D1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4247D1 falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 16 distinct

Callsign Airline Flights Last seen
CAY794 Cayman Airways 13 2026-05-17
CAY795 Cayman Airways 10 2026-05-17
CAY200 Cayman Airways 7 2026-05-29
CAY104 Cayman Airways 7 2026-05-27
CAY440 Cayman Airways 6 2026-05-30
CAY202 Cayman Airways 5 2026-05-25
CAY441 Cayman Airways 4 2026-05-23
CAY203 Cayman Airways 4 2026-05-25
CAY201 Cayman Airways 4 2026-05-29
CAY102 Cayman Airways 4 2026-05-13
CAY852 Cayman Airways 3 2026-05-04
CAY106 Cayman Airways 3 2026-05-21
CAY103 Cayman Airways 3 2026-05-08
CAY793 Cayman Airways 1 2026-05-28
CAY792 Cayman Airways 1 2026-05-27
CAY105 Cayman Airways 1 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CAY440 GCM → DEN May 30, 02:45 UTCMay 30, 17:55 UTC15h 10m
2026-05-29 CAY201 TPA → GCM May 29, 19:35 UTCMay 30, 00:40 UTC5h 5m
2026-05-29 CAY200 GCM → TPA May 29, 01:10 UTCMay 29, 18:20 UTC17h 10m
2026-05-28 CAY793 JFK → GCM May 28, 15:30 UTCMay 28, 22:50 UTC7h 20m
2026-05-27 CAY792 GCM → JFK May 27, 19:40 UTCMay 28, 02:30 UTC6h 50m
2026-05-27 CAY104 GCM → MIA May 27, 17:05 UTCMay 27, 17:35 UTC30m
2026-05-25 CAY203 TPA → GCM May 25, 21:04 UTCMay 25, 21:54 UTC50m
2026-05-25 CAY202 GCM → TPA May 25, 15:30 UTCMay 25, 19:44 UTC4h 14m
2026-05-24 CAY203 TPA → GCM May 24, 20:40 UTCMay 25, 13:30 UTC16h 50m
2026-05-24 CAY202 GCM → TPA May 24, 15:15 UTCMay 24, 19:25 UTC4h 10m
2026-05-23 CAY441 DEN → GCM May 23, 20:25 UTCMay 24, 13:10 UTC16h 45m
2026-05-23 CAY440 GCM → DEN May 23, 03:10 UTCMay 23, 18:10 UTC15h 0m
2026-05-22 CAY201 TPA → GCM May 22, 19:50 UTCMay 23, 01:00 UTC5h 10m
2026-05-22 CAY200 GCM → TPA May 22, 01:15 UTCMay 22, 18:20 UTC17h 5m
2026-05-21 CAY106 GCM → MIA May 21, 22:20 UTCMay 21, 22:55 UTC35m
2026-05-20 CAY105 MIA → GCM May 20, 19:55 UTCMay 20, 20:20 UTC25m
2026-05-20 CAY104 GCM → MIA May 20, 17:15 UTCMay 20, 17:50 UTC35m
2026-05-18 CAY203 TPA → GCM May 18, 21:45 UTCMay 18, 22:30 UTC45m
2026-05-18 CAY202 GCM → TPA May 18, 15:45 UTCMay 18, 20:10 UTC4h 24m
2026-05-17 CAY795 JFK → GCM May 17, 19:45 UTCMay 18, 13:25 UTC17h 40m
2026-05-17 CAY794 GCM → JFK May 17, 13:55 UTCMay 17, 16:40 UTC2h 45m
2026-05-16 CAY794 GCM → JFK May 16, 20:20 UTCMay 17, 16:40 UTC20h 20m
2026-05-16 CAY794 GCM → JFK May 16, 20:00 UTCMay 17, 16:40 UTC20h 40m
2026-05-16 CAY200 GCM → TPA May 16, 01:45 UTCMay 16, 18:40 UTC16h 56m
2026-05-15 CAY201 TPA → GCM May 15, 19:50 UTCMay 15, 23:45 UTC3h 55m
2026-05-15 CAY200 GCM → TPA May 15, 17:35 UTCMay 15, 18:55 UTC1h 20m
2026-05-14 CAY200 GCM → TPA May 14, 21:10 UTCMay 15, 18:55 UTC21h 44m
2026-05-14 CAY202 GCM → TPA May 14, 15:35 UTCMay 14, 19:45 UTC4h 10m
2026-05-13 CAY102 GCM → MIA May 13, 20:25 UTCMay 14, 13:35 UTC17h 10m
2026-05-13 CAY104 GCM → MIA May 13, 17:35 UTCMay 13, 18:15 UTC40m
2026-05-12 CAY104 GCM → MIA May 12, 20:20 UTCMay 13, 18:15 UTC21h 55m
2026-05-12 CAY104 GCM → MIA May 12, 19:50 UTCMay 13, 18:15 UTC22h 25m
2026-05-11 CAY104 GCM → MIA May 11, 22:35 UTCMay 12, 17:45 UTC19h 11m
2026-05-10 CAY795 JFK → GCM May 10, 19:15 UTCMay 10, 21:49 UTC2h 35m
2026-05-10 CAY794 GCM → JFK May 10, 13:44 UTCMay 10, 16:20 UTC2h 35m
2026-05-09 CAY794 GCM → JFK May 9, 19:14 UTCMay 10, 16:20 UTC21h 5m
2026-05-09 CAY200 GCM → TPA May 9, 17:05 UTCMay 9, 18:05 UTC1h 0m
2026-05-08 CAY103 MIA → GCM May 8, 15:45 UTCMay 8, 16:15 UTC30m
2026-05-07 CAY203 TPA → GCM May 7, 20:40 UTCMay 8, 13:40 UTC17h 0m
2026-05-07 CAY202 GCM → TPA May 7, 15:20 UTCMay 7, 19:30 UTC4h 10m
2026-05-07 CAY102 GCM → MIA May 7, 13:05 UTCMay 7, 13:40 UTC35m
2026-05-04 CAY852 GCM → PTY May 4, 17:10 UTCMay 4, 21:20 UTC4h 11m
2026-05-03 CAY795 JFK → GCM May 3, 22:20 UTCMay 4, 21:20 UTC23h 1m
2026-05-03 CAY795 JFK → GCM May 3, 20:20 UTCMay 4, 17:35 UTC21h 15m
2026-05-02 CAY794 GCM → JFK May 2, 22:20 UTCMay 3, 16:30 UTC18h 9m
2026-05-02 CAY441 DEN → GCM May 2, 20:35 UTCMay 3, 16:30 UTC19h 54m
2026-05-02 CAY440 GCM → DEN May 2, 01:40 UTCMay 2, 18:00 UTC16h 20m
2026-05-01 CAY201 TPA → GCM May 1, 19:50 UTCMay 1, 23:45 UTC3h 55m
2026-05-01 CAY200 GCM → TPA May 1, 17:35 UTCMay 1, 18:35 UTC1h 0m
2026-04-29 CAY795 JFK → GCM Apr 29, 19:30 UTCApr 29, 22:05 UTC2h 35m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the VP-CIX page for operator, model, and routing details .

Mode-S 4247D1 frequently asked

What is Mode-S code 4247D1?
4247D1 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to VP-CIX.
Where is Mode-S 4247D1 registered?
Mode-S code 4247D1 is allocated to United Kingdom (GB). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4247D1 broadcasting right now?
Yes. Mode-S 4247D1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4247D1, octal 20443721, decimal 4,343,761.
What flights does 4247D1 operate?
Mode-S 4247D1 has broadcast 16 distinct callsigns, including CAY794, CAY795, CAY200, CAY104, CAY440.